MRedef.c(20): error C2220: warning treated as error - no 'object' file generated
MRedef.c(20): warning C4005: 'SUM': macro redefinition
MRedef.c(19): note: see previous definition of 'SUM'
解决方法是在文件头部加入 Disable 这个 Warning 的指令如下：
#pragma warning (disable : 4005)
完整的代码如下：
#include <Uefi.h>
#include <Library/UefiLib.h>
#include <Library/ShellCEntryLib.h>
#pragma warning (disable : 4005)
/*
MRedef.c(20): error C2220: warning treated as error - no 'object' file generated
MRedef.c(20): warning C4005: 'SUM': macro redefinition
MRedef.c(19): note: see previous definition of 'SUM'
*/
#define SUM(a,b) a+b
#define SUM(a,b) a*b
/***
Print a welcoming message.
Establishes the main structure of the application.
@retval 0 The application exited normally.
@retval Other An error occurred.
***/
INTN
EFIAPI
ShellAppMain (
IN UINTN Argc,
IN CHAR16 **Argv
)
{
int c =3,d=4;
Print(L"Hello there fellow Programmer.\n");
Print(L"Welcome to the world of EDK II.\n");
Print(L"Macro test %d\n",SUM(c,d));
return(0);
}
//
// Support for variable argument lists in freestanding edk2 modules.
//
// For modules that use the ISO C library interfaces for variable
// argument lists, refer to "StdLib/Include/stdarg.h".
//
// VA_LIST - typedef for argument list.
// VA_START (VA_LIST Marker, argument before the ...) - Init Marker for use.
// VA_END (VA_LIST Marker) - Clear Marker
// VA_ARG (VA_LIST Marker, var arg type) - Use Marker to get an argument from
// the ... list. You must know the type and pass it in this macro. Type
// must be compatible with the type of the actual next argument (as promoted
// according to the default argument promotions.)
// VA_COPY (VA_LIST Dest, VA_LIST Start) - Initialize Dest as a copy of Start.
//
// Example:
//
// UINTN
// EFIAPI
// ExampleVarArg (
// IN UINTN NumberOfArgs,
// ...
// )
// {
// VA_LIST Marker;
// UINTN Index;
// UINTN Result;
//
// //
// // Initialize the Marker
// //
// VA_START (Marker, NumberOfArgs);
// for (Index = 0, Result = 0; Index < NumberOfArgs; Index++) {
// //
// // The ... list is a series of UINTN values, so sum them up.
// //
// Result += VA_ARG (Marker, UINTN);
// }
//
// VA_END (Marker);
// return Result;
// }
//
// Notes:
// - Functions that call VA_START() / VA_END() must have a variable
// argument list and must be declared EFIAPI.
// - Functions that call VA_COPY() / VA_END() must be declared EFIAPI.
// - Functions that only use VA_LIST and VA_ARG() need not be EFIAPI.
//
根据上面的代码，编写测试例子如下：
#include <Uefi.h>
#include <Library/UefiLib.h>
#include <Library/ShellCEntryLib.h>
UINTN
EFIAPI
VarSum (
IN UINTN NumberOfArgs,
...
)
{
VA_LIST Marker;
UINTN Index;
UINTN Result;
//
// Initialize the Marker
//
VA_START (Marker, NumberOfArgs);
for (Index = 0, Result = 0; Index < NumberOfArgs; Index++) {
//
// The ... list is a series of UINTN values, so sum them up.
//
Result += VA_ARG (Marker, UINTN);
}
VA_END (Marker);
return Result;
}
UINTN
EFIAPI
VarString (
IN UINTN NumberOfArgs,
...
)
{
VA_LIST Marker;
UINTN Index;
UINTN Result;
//
// Initialize the Marker
//
VA_START (Marker, NumberOfArgs);
for (Index = 0, Result = 0; Index < NumberOfArgs; Index++) {
//
// The ... list is a series of UINTN values, so sum them up.
//
//Result += VA_ARG (Marker, UINTN);
Print(L"String %d: %s\n",Index,VA_ARG (Marker, CHAR16*));
}
VA_END (Marker);
return Result;
}
/***
Print a welcoming message.
Establishes the main structure of the application.
@retval 0 The application exited normally.
@retval Other An error occurred.
***/
INTN
EFIAPI
ShellAppMain (
IN UINTN Argc,
IN CHAR16 **Argv
)
{
Print(L"VarSum(2,1,2)=%d\n",VarSum(2,1,2));
Print(L"VarSum(3,1,2,3)=%d\n",VarSum(3,1,2,3));
Print(L"VarSum(4,1,2,3,4)=%d\n",VarSum(4,1,2,3,4));
Print(L"VarString(4,L\"abcde\",L\"1234\",L\"efgh\",L\"5678\")\n",
VarString(4,L"abcde",L"1234",L"efgh",L"5678"));
return(0);
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Management;
using System.Collections;
namespace ConsoleApplication29
{
class Program
{
private static void GatherUsbInformation()
{
var mos = new ManagementObjectSearcher("select DeviceID from Win32_PnPEntity");
var mbos = new ArrayList(mos.Get());
var data = new Dictionary<string, string[]>();
for (var i = 0; i < mbos.Count; i++)
{
var managementBaseObject = mbos[i] as ManagementBaseObject;
if (managementBaseObject == null)
{
continue;
}
var deviceId = managementBaseObject.Properties["DeviceID"].Value as string;
if (deviceId == null || !deviceId.StartsWith("USB"))
{
continue;
}
if (!data.ContainsKey(deviceId))
{
data.Add(deviceId, new string[8]);
}
else if (data.ContainsKey(deviceId))
{
continue;
}
var mo = managementBaseObject as ManagementObject;
var inParams = mo.GetMethodParameters("GetDeviceProperties");
var result = mo.InvokeMethod(
"GetDeviceProperties",
inParams,
new InvokeMethodOptions()
);
if (result?.Properties["deviceProperties"].Value == null)
{
continue;
}
foreach (var deviceProperties in result.Properties["deviceProperties"].Value as ManagementBaseObject[])
{
var keyName = deviceProperties.Properties["KeyName"].Value as string;
var value = deviceProperties.Properties["Data"].Value as string;
if (string.IsNullOrWhiteSpace(value) || string.IsNullOrWhiteSpace(keyName))
{
//MachineInformationGatherer.Logger.LogTrace(
// $"KeyName {keyName} or Value {value} was null or whitespace for device ID {deviceId}");
continue;
}
Console.WriteLine(keyName);
Console.WriteLine(value);
switch (keyName)
{
case "DEVPKEY_Device_BusReportedDeviceDesc":
{
data[deviceId][0] = value;
break;
}
case "DEVPKEY_Device_DriverDesc":
{
data[deviceId][1] = value;
break;
}
case "DEVPKEY_Device_DriverVersion":
{
data[deviceId][2] = value;
break;
}
case "DEVPKEY_Device_DriverDate":
{
var year = int.Parse(value.Substring(0, 4));
var month = int.Parse(value.Substring(4, 2));
var day = int.Parse(value.Substring(6, 2));
var hour = int.Parse(value.Substring(8, 2));
var minute = int.Parse(value.Substring(10, 2));
var second = int.Parse(value.Substring(12, 2));
data[deviceId][3] =
new DateTime(year, month, day, hour, minute, second).ToString();
break;
}
case "DEVPKEY_Device_Class":
{
data[deviceId][4] = value;
break;
}
case "DEVPKEY_Device_DriverProvider":
{
data[deviceId][5] = value;
break;
}
case "DEVPKEY_NAME":
{
data[deviceId][6] = value;
break;
}
case "DEVPKEY_Device_Manufacturer":
{
data[deviceId][7] = value;
break;
}
case "DEVPKEY_Device_Children":
{
var children = deviceProperties.Properties["DEVPKEY_Device_Children"];
if (children.Value != null)
{
if (children.IsArray)
{
foreach (var child in children.Value as string[])
{
mos.Query = new ObjectQuery(
$"select * from Win32_PnPEntity where DeviceID = {child}");
var childs = mos.Get();
foreach (var child1 in childs)
{
mbos.Add(child1);
}
}
}
}
break;
}
}
}
}
}
static void Main(string[] args)
{
GatherUsbInformation();
Console.ReadKey();
}
}
}
喜欢军事的朋友一定经常听过这句话，这就是“只要推力大，板砖也能飞上天”。实际上，这句话并非玩笑之语，确有出处。当年，F-22是从“先进战术战斗机”（简称ATF）计划发展而来的。早期，好几家公司一起竞标，分别是波音，通用动力，洛克希德，诺思罗普，和麦道公司。大家提概念设计方案。结果，可能是因为洛克希德曾经设计出F-117隐形飞机的缘故，走老路当然是最轻松的，所以，洛克希德最初提出的F-22前身方案，它就像是F-117的放大版。设计跟F-117这个怪胎一样，为了隐身性能，以牺牲空气动力学为代价，飞机设计总重36吨。后来，有个人是这么评价这种早期设计的，他就是洛克希德在ATF计划中的项目经理巴特·奥斯本（bart osborne），1998年，一家杂志对奥斯本进行采访【参考1】，而他是这样说的：“我们知道，这个设计将会存在严重的超音速问题，我们的设计当然可以超音速飞行，但肯定蠢得像猪。显然，只要推力大，板砖也能飞上天（With enough power, you can make a brick fly）”
